ICSE Class 10 Chemistry Question 17 of 62

Study of Compounds — Sulphuric Acid — Question 11

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Question

Question 11

Making use only of substances given: dil. sulphuric acid, Sodium carbonate, Zinc, Sodium Sulphite, Lead, Calcium carbonate:

Give equations for the reactions by which you could obtain:

(a) hydrogen

(b) sulphur dioxide

(c) carbon dioxide

(d) zinc carbonate (2 steps)

Answer

(a) Zn + H2SO4 [dil.] ⟶ ZnSO4 + H2

(b) Na2SO3 + H2SO4 [dil.] ⟶ Na2SO4 + H2O + SO2

(c) Na2CO3 + H2SO4 [dil.] ⟶ Na2SO4 + H2O + CO2

(d) Zn + H2SO4 [dil.] ⟶ ZnSO4 + H2
ZnSO4 + Na2CO3 [dil.] ⟶ ZnCO3 + Na2SO4